|
 Water quality
classification of surface streams by the CSN 75 7221 Czech National
Standard, 1996 - 1997
Average concentrations and
discharges of substances in surface streams,
1997
Codes of monitoring
profiles
Average
yearly values of selected parameters
|
Želivka
- improved water |
Káraný -
improved water |
|
Indicator |
1992
|
1993
|
1994
|
1995
|
1996
|
1997
|
Indicator |
1992
|
1993
|
1994
|
1995
|
1996
|
1997
|
|
COD
Mn
[mg.l-1] |
2.00
|
1.80
|
1.70
|
1.70
|
1.80
|
1.69
|
COD
Mn
[mg.l-1] |
0.90
|
0.90
|
1.00
|
0.80
|
0.80
|
0.80
|
|
Nitrates
[mg.l-1] |
36.6
|
32.8
|
32.7
|
33.6
|
34.8
|
29.6
|
Nitrates
[mg.l-1] |
17.6
|
17.0
|
25.6
|
22.1
|
24.3
|
21.4
|
|
Nitrites
[mg.l-1] |
0.000
|
0.000
|
0.000
|
0.000
|
0.000
|
0.0004
|
Nitrites
[mg.l-1] |
0.000
|
0.000
|
0.018
|
0.002
|
0.001
|
0.002
|
|
Ammon.
ions
[mg.l-1] |
0.05
|
0.05
|
0.05
|
0.05
|
0.03
|
0.0065
|
Ammon.
ions
[mg.l-1] |
0.00
|
0.00
|
0.01
|
0.00
|
0.00
|
0.005
|
|
Chlorides
[mg.l-1] |
28.4
|
28.2
|
28.7
|
26.9
|
23
|
21.34
|
Chlorides
[mg.l-1] |
23.0
|
22.2
|
22.9
|
22.9
|
23.5
|
22.7
|
|
pH
|
8.0
|
8.0
|
8.1
|
8.0
|
7.8
|
7.93
|
pH
|
7.7
|
7.5
|
7.3
|
7.3
|
7.3
|
7.33
|
|
Phosphates
[mg.l-1] |
0.004
|
0.003
|
0.003
|
*0.005
|
*0.006
|
0.0113
|
Phosphates
[mg.l-1] |
0.060
|
0.030
|
0.050
|
0.090
|
0.110
|
0.125
|
|
Calcium
[mg.l-1] |
39.7
|
39.1
|
38.9
|
38.1
|
37.7
|
35.56
|
Hardness
[mmol.l-1] |
2.4
|
2.3
|
3.5
|
2.6
|
2.6
|
2.56
|
|
Conductivity
[mS.m-1] |
34.8
|
35.1
|
35.1
|
34.5
|
33.7
|
31.06
|
Conductivity
[mS.m-1] |
47.3
|
44.0
|
53.6
|
50.1
|
54.1
|
47.1
|
|
Dead
org.
[individ.ml-1] |
7.0
|
0.0
|
13.0
|
4.0
|
4.0
|
2.2
|
Dead
org..
[individ.ml-1] |
0.0
|
0.0
|
0.0
|
0.0
|
0.0
|
0.0
|
|
Aluminium
[mg.l-1]
residual
koag.
|
0.04
|
0.04
|
0.03
|
0.03
|
0.03
|
0.0357
|
Iron
[mg.l-1] |
0.00
|
0.05
|
0.12
|
0.02
|
0.03
|
0.03
|
|
Podolí -
improved water |
Supply
network - consumer |
|
Indicator |
1992
|
1993
|
1994
|
1995
|
1996
|
1997
|
Indicator |
1992
|
1993
|
1994
|
1995
|
1996
|
1997
|
|
COD
Mn
[mg.l-1] |
1.54
|
1.76
|
1.3
|
1.43
|
1.6
|
1.5
|
COD
Mn
[mg.l-1] |
1.66
|
1.35
|
1.38
|
1.61
|
1.78
|
1.33
|
|
Nitrates
[mg.l-1] |
22.7
|
18.6
|
19.0
|
17.7
|
18.1
|
15.8
|
Nitrates
[mg.l-1] |
30.8
|
27.5
|
30.9
|
28.6
|
30.3
|
26.6
|
|
Nitrites
[mg.l-1] |
0.000
|
0.050
|
0.000
|
0.000
|
0.000
|
0.000
|
Nitrites
[mg.l-1] |
0.01
|
0.03
|
0.040
|
0.020
|
0.020
|
0.020
|
|
Ammon.
ions
[mg.l-1] |
0.02
|
0.05
|
0.02
|
0.03
|
0.05
|
0.02
|
Ammon.
ions
[mg.l-1] |
0.04
|
0.09
|
0.07
|
0.09
|
0.04
|
0.01
|
|
Chlorides
[mg.l-1] |
26.5
|
26.2
|
23.0
|
20.5
|
19.4
|
18.9
|
Chlorides
[mg.l-1] |
26.6
|
27.2
|
27.4
|
25.6
|
23.9
|
21.48
|
|
pH
|
7.1
|
7.1
|
7.1
|
7.1
|
7.2
|
7.2
|
pH
|
7.7
|
7.8
|
7.9
|
7.7
|
7.7
|
7.75
|
|
Phosphates.
[mg.l-1] |
0.010
|
0.020
|
0.010
|
0.010
|
0.060
|
0.010
|
Hardness
[mmol.l-1] |
1.47
|
1.55
|
1.47
|
1.54
|
1.51
|
1.49
|
|
Hardness
[mmol.l-1] |
2.00
|
1.90
|
1.80
|
1.50
|
1.60
|
1.59
|
Conductivity
[mS.m-1] |
37.8
|
37.6
|
39.3
|
39.6
|
35.5
|
34.4
|
|
Conductivity
[mS.m-1] |
35.4
|
34.2
|
34.3
|
31.7
|
31.3
|
31.0
|
Dead
org.
[individ.ml-1] |
/
|
21.1
|
0.4
|
2.6
|
1.4
|
4.9
|
|
Dead
org.
[individ.ml-1] |
18.0
|
25.0
|
26.0
|
19.0
|
10.0
|
16.0
|
Living
org.
[individ.ml-1] |
0.10
|
0.00
|
0.00
|
0.10
|
0.02
|
0.10
|
|
Iron
[mg.l-1]
residual
koag.
|
0.07
|
0.06
|
0.05
|
0.03
|
0.01
|
0
|
Iron
[mg.l-1] |
0.13
|
0.16
|
0.18
|
0.14
|
0.11
|
0.14
|
|
Manganese
[mg.l-1] |
0.03
|
0.06
|
0.05
|
0.02
|
0.01
|
0.03
|
Manganese
[mg.l-1] |
0.040
|
0.009
|
0.017
|
0.011
|
0.019
|
0.018
|
* total
phosphorus
Source:
Pražské vodovody a kanalizace a.s.
| 